7 Maths 5 Line and angles part 2

Types of Angles

Supplementary angle

Two angles are supplementary if they add up to . Supplementary angles do not have to be congruent or next to each other.


BG 0108G (H264)

Angle Basics

Complementary, Supplementary, and Vertical Angles

Practice questions:  http://www.ck12.org/book/CK-12-Basic-Geometry-Concepts/r9/section/1.8/

Adjacent Angles and linear Pair


Two angles are adjacent if they have the same vertex, share a side, and do not overlap angle PSQ and angle QSR are adjacent.

Adjacent angles.png

linear pair is two angles that are adjacent and whose non-common sides form a straight line. If two angles are a linear pair, then they are supplementary (add up to 180 deg) angle PSQ and angle QSR are a linear pair.

Linear pair.png

BG 0109E (H264)

BG 0109G (H264)

Complementary and Supplementary Angles

Return to top